With the wide application of microelectronic components, the phenomenon of electrostatic hazards has become increasingly prominent. Before entering the market, electronic and electrical products need to be tested for electrostatic immunity, mainly to avoid the interference of static electricity during the use of electronic products.
When electronic products are disturbed by static electricity, the following situations will generally occur: crash cannot restart, return to normal after the crash and restart, malfunction etc. These all indicate that the electrostatic immunity of the product is not done well.
In this case, we will use an ESD (electrostatic discharge) generator to detect the electrostatic immunity of the product. For civil electronic products, we generally recommend a 20kV ESD gun. Under IEC/EN 61000-4-2 and GBT17626.2 standard, the highest level of air discharge is 15kV, so 20kV is enough to use.
When doing the electrostatic immunity test, we should hold the ESD gun in hand, and conduct the incremental discharge test vertically to the EUT/DUT. If the above conditions occur during test, we will judge that the sample fails ESD immunity test, and then carry out appropriate corrections.
